Doctor, My Stomach Hurts. I Can't Eat, Everything Hurts My

Doctor, my stomach hurts. I can't eat, everything hurts my stomach. I throw up but all that comes out is saliva. Nothing tastes good and I don't want to eat because it hurts my stomach and the pain goes up into my chest between my breasts. It started yesterday morning. I had a headache too. I've gone to work yesterday and today but have had to go to the bathroom to vomit saliva. I only work part time but can hardly wait to go home and lie down. Yesterday Tums worked pretty good, but how many of those can you take?